Seyed Ali Shobayri, Seyed Ali Shobayri is of mixed Iranian and Scottish descent who found the path of the Ahlul Bayt (a) by his own research. He holds a BA in Islamic Studies from Middlesex University through the... Answered 4 years ago
Bismillah,
Asalamu Alaykom,
Unlike Wudu which must have muwalat (successive continuity) ghusl may be done in parts; therefore, you may wash only your head for example, and then come back later to wash other parts of your body. So if you didn't wash a part, you may go back and do it as part of the same ghusl.
May Allah grant you success